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Noonan syndrome is a genetic disorder that causes abnormal development of multiple parts of the body. Features of Noonan syndrome may include a distinctive facial appearance, short stature, a broad or webbed neck, congenital heart defects, bleeding problems, skeletal malformations, and developmental delay. Noonan syndr...
Neurodegeneration with brain iron accumulation (NBIA) is a rare, inherited, neurological movement disorder characterized by an abnormal accumulation of iron in the brain and progressive degeneration of the nervous system. Symptoms, which vary greatly among patients and usually develop during childhood, may include dyst...
Retinoblastoma is diagnosed in 250 to 350 children per year in the United States. It accounts for about 4 percent of all cancers in children younger than 15 years.
A prosthetic joint infection (PJI) is a rare complication of joint replacement surgery, also known as arthroplasty. Arthroplasty is done to help relieve pain and restore function in a severely diseased joint, such as a knee, hip or shoulder. Approximately 0.5 to 1 percent of people with replacement joints develop a P...
Treatment may include such medications as baclofen, diazepam, tizanidine or clonazepam. Physical therapy regimens may include muscle stretching and range of motion exercises to help prevent shrinkage or shortening of muscles and to reduce the severity of symptoms. Targeted injection of botulinum toxin into muscles with...
How might mandibulofacial dysostosis with microcephaly be treated? Individualized treatment of craniofacial features is managed by a multidisciplinary team which may include various specialists. Surgery may be needed for a variety of abnormalities, in the newborn period or beyond. Treatment of hearing loss is individua...
Platyspondylic lethal skeletal dysplasia, Torrance type is one of a spectrum of skeletal disorders caused by mutations in the COL2A1 gene. This gene provides instructions for making a protein that forms type II collagen. This type of collagen is found mostly in the clear gel that fills the eyeball (the vitreous) and in...
Your autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart and the widening or narrowing of your blood vessels. When something goes wrong in this system, it can cause serious problems, including - Blood pressure problems - Heart probl...
Tourette syndrome (TS) is a neurological disorder characterized by repetitive, stereotyped, involuntary movements and vocalizations called tics. The first symptoms of TS are almost always noticed in childhood. Some of the more common tics include eye blinking and other vision irregularities, facial grimacing, shoulder ...
Mutations in the IKBKG gene cause incontinentia pigmenti. The IKBKG gene provides instructions for making a protein that helps regulate nuclear factor-kappa-B. Nuclear factor-kappa-B is a group of related proteins that helps protect cells from self-destructing (undergoing apoptosis) in response to certain signals. Abo...
Von Willebrand disease is estimated to affect 1 in 100 to 10,000 individuals. Because people with mild signs and symptoms may not come to medical attention, it is thought that this condition is underdiagnosed. Most researchers agree that von Willebrand disease is the most common genetic bleeding disorder.
Familial porencephaly is part of a group of conditions called the COL4A1-related disorders. The conditions in this group have a range of signs and symptoms that involve fragile blood vessels. In familial porencephaly, fluid-filled cysts develop in the brain (porencephaly) during fetal development or soon after birth. T...
What are the most current treatments for this disease? In amyloidosis AA, the treatment depends on the underlying disease. It is important to control the chronic infection or inflammatory disease which is responsible for the amyloid. Both surgery and medication can be used to achieve successful treatment outcomes for p...
These resources address the diagnosis or management of GM3 synthase deficiency: - American Epilepsy Society: Find a Doctor - Clinic for Special Children (Strasburg, Pennsylvania) - Genetic Testing Registry: Amish infantile epilepsy syndrome These resources from MedlinePlus offer information about the diagnosis and...
Roberts syndrome is a genetic disorder characterized by limb and facial abnormalities. Affected individuals are born with abnormalities of all four limbs and typically have shortened arm and leg bones (hypomelia). They may also have phocomelia (in severe cases); abnormal or missing fingers and toes; joint deformities (...
Protein S deficiency is a disorder of blood clotting. People with this condition have an increased risk of developing abnormal blood clots. Individuals with mild protein S deficiency are at risk of a type of clot called a deep vein thrombosis (DVT) that occurs in the deep veins of the arms or legs. If a DVT travels th...
These resources address the diagnosis or management of malonyl-CoA decarboxylase deficiency: - Baby's First Test - Genetic Testing Registry: Deficiency of malonyl-CoA decarboxylase These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests...
What causes MYH-associated polyposis? Mutations in the MYH gene cause MYH-associated polyposis. Mutations in this gene prevent cells from correcting mistakes that are made when DNA is copied (DNA replication) in preparation for cell division. As these mistakes build up in a person's DNA, the likelihood of cell overgrow...
Carcinoid syndrome refers to a group of symptoms that are associated with carcinoid tumors (rare, slow-growing tumors that occur most frequently in the gastroinestinal tract or lungs). Affected people may experience skin flushing, abdominal pain, diarrhea, difficulty breathing, rapid heart rate, low blood pressure, ski...
Mutations in the GALNS and GLB1 genes cause MPS IV. These genes provide instructions for producing enzymes involved in the breakdown of large sugar molecules called glycosaminoglycans (GAGs). GAGs were originally called mucopolysaccharides, which is where this condition gets its name. When MPS IV is caused by mutations...
Treatment is symptomatic. Physical and occupational therapy may help individuals recover from weakness or paralysis. A catheter may be necessary for patients with urinary incontinence.
Mucoepidermoid carcinoma is a type of cancer of the salivary glands. Salivary gland cancer is diagnosed in 2-3 individuals per 100,000 people each year, and 30-35% of these are mucoepidermoid carcinomas. Mucoepidermoid carcinoma develops when a cell randomly acquires changes (mutations) in genes that regulate how th...
Congenital NCL is the rarest type of NCL; approximately 10 cases have been described.
A mutation in the CTDP1 gene causes CCFDN. The CTDP1 gene provides instructions for making a protein called carboxy-terminal domain phosphatase 1. This protein helps regulate the process of transcription, which is a key step in using the information carried by genes to direct the production (synthesis) of proteins. Al...
Antiepileptic drugs are used to control seizures, but are unfortunately not usually very effective for this disorder. Corticosteroids are occasionally helpful. In cases where there is a focal brain lesion (damage contained to one area of the brain) surgery may be beneficial. Other therapies are symptomatic and supporti...
How is branchiooculofacial syndrome (BOFS) inherited? Although some cases can be sporadic, most of the reported cases are inherited within families. BOFS is inherited in an autosomal dominant pattern, which means that one copy of the altered TFAP2A gene in each cell is sufficient to cause this condition.
Hypochondrogenesis and achondrogenesis, type 2 (a similar skeletal disorder) together affect 1 in 40,000 to 60,000 newborns.
What are the signs and symptoms of Primary spontaneous pneumothorax? The Human Phenotype Ontology provides the following list of signs and symptoms for Primary spontaneous pneumothorax. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the...
How might Brody disease be treated? There have been case reports describing treatment of Brody disease with the muscle relaxant, dantrolene and with calcium channel blockers with varying success.
Troyer syndrome is a neurological disorder and one of the many types of hereditary spastic paraplegia. Signs and symptoms typically begin in early childhood and may include progressive muscle weakness and stiffness (spasticity) in the legs; muscle wasting in the hands and feet; paraplegia; leg contractures; development...
Neurofibromatosis type 1 is considered to have an autosomal dominant pattern of inheritance. People with this condition are born with one mutated copy of the NF1 gene in each cell. In about half of cases, the altered gene is inherited from an affected parent. The remaining cases result from new mutations in the NF1 gen...
Familial Mediterranean fever (FMF) is an inherited condition characterized by episodes of painful inflammation of the abdominal lining (peritonitis), lining surrounding the lungs (pleurisy), and joints (arthralgia and occasionally arthritis). These episodes are often accompanied by fever and sometimes a characteristic...
Fascioliasis is an infectious disease caused by Fasciola parasites, which are flat worms referred to as liver flukes. The adult (mature) flukes are found in the bile ducts and liver of infected people and animals, such as sheep and cattle. In general, fascioliasis is more common in livestock and other animals than in p...
What causes essential tremor? The causes of essential tremor are unknown. Researchers are studying several areas (loci) on particular chromosomes that may be linked to essential tremor, but no specific genetic associations have been confirmed. Several genes, as well as environmental factors, are likely involved in an i...
Certain factors affect prognosis (chance of recovery) and treatment options. The prognosis (chance of recovery) and treatment options depend on the following: - The stage of the cancer. - The size of the tumor. - Whether there are B symptoms at diagnosis. - The type of Hodgkin lymphoma. - Certain f...
These resources address the diagnosis or management of laryngo-onycho-cutaneous syndrome: - Genetic Testing Registry: Laryngoonychocutaneous syndrome These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surgery and ...
MRKH syndrome affects approximately 1 in 4,500 newborn girls.
There is no specific treatment to stop or reverse any form of MD. Treatment may include physical therapy, respiratory therapy, speech therapy, orthopedic appliances used for support, and corrective orthopedic surgery. Drug therapy includes corticosteroids to slow muscle degeneration, anticonvulsants to control seizures...
COG5-CDG is a very rare disorder; fewer than 10 cases have been described in the medical literature.
Yes. Other medications available to treat some symptoms and stages of Parkinson's disease include direct dopamine agonists, MAO-B inhibitors, COMT inhibitors, an anti-viral drug, and anticholinergics. Direct dopamine agonists are drugs that mimic the role of dopamine in the brain. They can be used in the early stages o...
Certain factors affect prognosis (chance of recovery) and treatment options. The prognosis (chance of recovery) depends on the type of tumor and whether the tumor has spread into other areas of the central nervous system (brain and spinal cord) or outside of the central nervous system to other parts of the body. Trea...
Alpha-mannosidosis is estimated to occur in approximately 1 in 500,000 people worldwide.
CPVT can result from mutations in two genes, RYR2 and CASQ2. RYR2 gene mutations cause about half of all cases, while mutations in the CASQ2 gene account for 1 percent to 2 percent of cases. In people without an identified mutation in one of these genes, the genetic cause of the disorder is unknown. The RYR2 and CASQ2...
One way to prevent taeniasis is to cook meat to safe temperatures. A food thermometer should be used to measure the internal temperature of cooked meat. Do not sample meat until it is cooked. USDA recommends the following for meat preparation. - For Whole Cuts of Meat (excluding poultry) - Cook to ...
Some diseases and conditions can disrupt the body's normal blood clotting process and lead to disseminated intravascular coagulation (DIC). These diseases and conditions include: Sepsis (an infection in the bloodstream) Surgery and trauma Cancer Seriou...
Tests that examine the vulva are used to detect (find) and diagnose vulvar cancer. The following tests and procedures may be used: - Physical exam and history : An exam of the body to check general signs of health, including checking the vulva for signs of disease, such as lumps or anything else that seems un...
Mutations in the FGFR3 gene cause achondroplasia. The FGFR3 gene provides instructions for making a protein that is involved in the development and maintenance of bone and brain tissue. Two specific mutations in the FGFR3 gene are responsible for almost all cases of achondroplasia. Researchers believe that these mutati...
In the United States, about 1,000 new cases of pulmonary arterial hypertension are diagnosed each year. This disorder is twice as common in females as in males.
Recurrent hydatidiform mole occurs when women have at least two abnormal pregnancies described as hydatidiform moles. A hydatidiform mole occurs early in pregnancy when an embryo does not fully develop and the placenta develops abnormally. The placenta is a solid structure in the uterus that normally provides nutrients...
Smoking contributes to many common disorders of the digestive system, such as heartburn and gastroesophageal reflux disease (GERD), peptic ulcers, and some liver diseases. Smoking increases the risk of Crohns disease, colon polyps, and pancreatitis, and it may increase the risk of gallstones.
How is cramp-fasciculation syndrome diagnosed? A diagnosis of cramp-fasciculation syndrome is generally based on the presence of characteristic signs and symptoms. Namely, a history of frequent muscle cramps, twitching, and pain (often worsened by exercise) without muscle weakness or wasting is suggestive of the condi...
Most individuals with NMO have an unpredictable, relapsing course of disease with attacks occurring months or years apart. Disability is cumulative, the result of each attack damaging new areas of the central nervous system. Some individuals are severely affected by NMO and can lose vision in both eyes and the use of t...
Almost everyone with Emanuel syndrome inherits the der(22) chromosome from an unaffected parent. The parent carries a chromosomal rearrangement between chromosomes 11 and 22 called a balanced translocation. No genetic material is gained or lost in a balanced translocation, so these chromosomal changes usually do not ca...
Cushing's syndrome, also called hypercortisolism, is a rare endocrine disorder caused by chronic exposure of the body's tissues to excess levels of cortisol - a hormone naturally produced by the adrenal gland. Exposure to too much cortisol can occur from long-term use of synthetic glucocorticoid hormones to treat infla...
Cardiofaciocutaneous syndrome is considered to be an autosomal dominant condition, which means one copy of an altered gene in each cell is sufficient to cause the disorder. Cardiofaciocutaneous syndrome usually results from new gene mutations and occurs in people with no history of the disorder in their family. In a f...
This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.
What causes chronic inflammatory demyelinating polyneuropathy (CIDP)? The exact underlying cause of CIDP is unknown, but there is evidence to support that it is related to the immune system and may have multiple triggers. It is thought to be caused by an abnormal immune response in which the immune system mistakenly at...
2-methylbutyryl-CoA dehydrogenase deficiency is a rare disorder; its actual incidence is unknown. This disorder is more common, however, among Hmong populations in southeast Asia and in Hmong Americans. 2-methylbutyryl-CoA dehydrogenase deficiency occurs in 1 in 250 to 1 in 500 people of Hmong ancestry.
Clouston syndrome is caused by mutations in the GJB6 gene. This gene provides instructions for making a protein called gap junction beta 6, more commonly known as connexin 30. Connexin 30 is a member of the connexin protein family. Connexin proteins form channels called gap junctions, which permit the transport of nutr...
Retinal arterial macroaneurysm with supravalvular pulmonic stenosis (RAMSVPS) is a disorder that affects blood vessels in the eyes and heart. The condition generally becomes apparent in infancy or childhood. RAMSVPS damages the arteries in the light-sensitive tissue at the back of the eye (the retina). These arteries ...
- Gas is air in the digestive tract. - Everyone has gas. However, many people think they pass gas too often and that they have too much gas. Having too much gas is rare. - Gas in the digestive tract is usually caused by swallowing air and by the breakdown of certain foods in the large intestine by bacteria. - Most f...
Early intervention including appropriate and specialized educational programs and support services plays a critical role in improving the outcome of individuals with PDD. PDD is not fatal and does not affect normal life expectancy.
The mission of the National Institute of Neurological Disorders and Stroke (NINDS) is to seek fundamental knowledge of the brain and nervous system and to use that knowledge to reduce the burden of neurological disease. The NINDS is a component of the National Institutes of Health, the leading supporter of biomedical r...
Stormorken syndrome is caused by a mutation in the STIM1 gene. The protein produced from this gene is involved in controlling the entry of positively charged calcium atoms (calcium ions) into cells. The STIM1 protein recognizes when calcium ion levels are low and stimulates the flow of ions into the cell through specia...
Mutations in the EDN3, EDNRB, MITF, PAX3, SNAI2, and SOX10 genes can cause Waardenburg syndrome. These genes are involved in the formation and development of several types of cells, including pigment-producing cells called melanocytes. Melanocytes make a pigment called melanin, which contributes to skin, hair, and eye ...
What are the signs and symptoms of Spondyloepiphyseal dysplasia Maroteaux type? The Human Phenotype Ontology provides the following list of signs and symptoms for Spondyloepiphyseal dysplasia Maroteaux type. If the information is available, the table below includes how often the symptom is seen in people with this cond...
Congenital sucrase-isomaltase deficiency is a disorder that affects a person's ability to digest certain sugars. People with this condition cannot break down the sugars sucrose and maltose. Sucrose (a sugar found in fruits, and also known as table sugar) and maltose (the sugar found in grains) are called disaccharides ...
Renal insufficiency, or the inability of the kidneys to eliminate waste products, is a common cause of gout in older people. Here are other medical problems that contribute to high blood levels of uric acid and can put people at risk for gout. - high blood pressure - hypothyroidism (underactive thyroid gland) - condi...
Peritoneal dialysis is a treatment for kidney failure that uses the lining of your abdomen, or belly, to filter your blood inside your body. Doctors call this lining the peritoneum. A doctor will place a soft tube, called a catheter, in your belly a few weeks before you start treatment. When you start ...
What treatment is available for pigmented purpuric eruption? There is no treatment that has been proven to be beneficial for people with pigmented purpuric eruption. However, some treatments have been reported to improve this condition, including pentoxifylline, aminaphtone, and photochemotherapy (PUVA).
The pituitary gland, sometimes called the master gland, plays a critical role in regulating growth and development, metabolism, and reproduction. It produces prolactin and other key hormones including - growth hormone, which regulates growth - adrenocorticotropin (ACTH), which stimulates the adrenal g...
Pityriasis lichenoides chronica is the mild, chronic form of pityriasis lichenoides, a skin disorder of unknown cause. This condition is characterized by the gradual development of symptomless, small, scaling papules that spontaneously flatten and regress over a period of weeks or months. Lesions at various stages may ...
Sensorineural deafness and male infertility is a condition characterized by hearing loss and an inability to father children. Affected individuals have moderate to severe sensorineural hearing loss, which is caused by abnormalities in the inner ear. The hearing loss is typically diagnosed in early childhood and does no...
This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.
Vitelliform macular dystrophy is a genetic eye disorder that can cause progressive vision loss. This disorder affects the retina, the specialized light-sensitive tissue that lines the back of the eye. Specifically, vitelliform macular dystrophy disrupts cells in a small area near the center of the retina called the mac...
In the United States, Krabbe disease affects about 1 in 100,000 individuals. A higher incidence (6 cases per 1,000 people) has been reported in a few isolated communities in Israel.
The liver is an organ that does many important things. You cannot live without a liver. *See the Pronunciation Guide for tips on how to say the words in bold type. The liver - removes harmful chemicals from your blood - fights infection - helps digest food - stores ...
Globozoospermia is a condition that affects only males. It is characterized by abnormal sperm and leads to an inability to father biological children (infertility). Normal sperm cells have an oval-shaped head with a cap-like covering called the acrosome. The acrosome contains enzymes that break down the outer membrane...
The prevalence of this condition is unknown, although one study estimated that it may affect 1 in 250,000 people. It is difficult to determine how frequently Townes-Brocks syndrome occurs because the varied signs and symptoms of this disorder overlap with those of other genetic syndromes.
There is no standard protocol to treat FMD. Any treatment to improve blood flow is based on the arteries affected and the progression and severity of the disease. The carotid arteries should be tested if FMD is found elsewhere in the body since carotid involvement is linked to an increased risk of stroke. Patients with...
Many children wet the bed until they are 5 or even older. A child's bladder might be too small. Or the amount of urine produced overnight can be more than the bladder can hold. Some children sleep too deeply or take longer to learn bladder control. Stress can also be a factor. Children should not be punished for wettin...
Summary : Eye wear protects or corrects your vision. Examples are - Sunglasses - Safety goggles - Glasses (also called eyeglasses) - Contact lenses If you need corrective lenses, you may be able to choose between contacts or glasses. Either usually requires a prescription. Almost anyone can wear gl...
How might retroperitoneal fibrosis be treated? Treatment of retroperitoneal fibrosis may include: Corticosteroid therapy Tamoxifen Surgery Stents Corticosteroids are tried first. Dosing will be prescribed on a case by case basis, but doses often vary between 30 and 60 mg per day. Corticosteroids are then tapered slowly...
What are the signs and symptoms of disseminated peritoneal leiomyomatosis (DPL)? Disseminated peritoneal leiomyomatosis (DPL) often does not produce any symptoms. When symptoms do occur, they may include: Abdominal and pelvic pain which is often associated with abnormal menstrual bleeding (dysmenorrhia) Rectal bleeding...
LAMM syndrome is caused by mutations in the FGF3 gene, which provides instructions for making a protein called fibroblast growth factor 3 (FGF3). By attaching to another protein known as a receptor, the FGF3 protein triggers a cascade of chemical reactions inside the cell that signal the cell to undergo certain changes...
How might leukonychia totalis be treated? There is no universally successful treatment for the whitening of the nails in people with leukonychia totalis. However, if the condition is known to have an underlying cause, treating that cause (when possible) may improve the condition.
The National Institute of Neurological Disorders and Stroke (NINDS) conducts research related to SPS in its laboratories at the National Institutes of Health (NIH), and also supports additional research through grants to major medical institutions across the country. A study using the drug rituximab proved ineffective ...
N-acetylglutamate synthase deficiency is a very rare disorder. Only a few cases have been reported worldwide, and the overall incidence is unknown.
Spastic paraplegia type 2 is part of a group of genetic disorders known as hereditary spastic paraplegias. These disorders are characterized by progressive muscle stiffness (spasticity) and the development of paralysis of the lower limbs (paraplegia). Hereditary spastic paraplegias are divided into two types: pure and ...
These resources address the diagnosis or management of abdominal wall defect: - Cincinnati Children's Hospital: Gastroschisis - Cincinnati Children's Hospital: Omphalocele - Cleveland Clinic: Omphalocele - Genetic Testing Registry: Congenital omphalocele - Great Ormond Street Hospital for Children (UK): Gastroschi...
Potassium-aggravated myotonia is a disorder that affects muscles used for movement (skeletal muscles). Beginning in childhood or adolescence, people with this condition experience bouts of sustained muscle tensing (myotonia) that prevent muscles from relaxing normally. Myotonia causes muscle stiffness that worsens afte...
The cause of Meige disease is unknown. The condition is thought to be genetic because it tends to run in families, and other forms of primary lymphedema have been found to have a genetic cause. Researchers have studied many genes associated with the lymphatic system; however, no genetic change has been definitively fou...
Summary : In coronary artery disease (CAD), the arteries that supply blood and oxygen to your heart muscle grow hardened and narrowed. You may try treatments such as lifestyle changes, medicines, and angioplasty, a procedure to open the arteries. If these treatments don't help, you may need coronary artery bypass surge...
These resources address the diagnosis or management of gyrate atrophy: - Baby's First Test - Genetic Testing Registry: Ornithine aminotransferase deficiency These resources from MedlinePlus offer information about the diagnosis and management of various health conditions: - Diagnostic Tests - Drug Therapy - Surg...
This condition is inherited in an autosomal recessive pattern, which means both copies of the gene in each cell have mutations. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition.
Keratoderma with woolly hair is rare; its prevalence worldwide is unknown. Type I (Naxos disease) was first described in families from the Greek island of Naxos. Since then, affected families have been found in other Greek islands, Turkey, and the Middle East. This form of the condition may affect up to 1 in 1,000 peo...
Children vary in their development of speech and language skills. Health professionals have milestones for what's normal. These milestones help determine if a child is on track or if he or she may need extra help. For example, a child usually has one or two words like "Hi," "dog," "Dada," or "Mama" by her first birthda...
Women have smaller bones, and they lose bone more rapidly than men because of hormone changes that occur after menopause. Therefore, women are at higher risk for osteoporosis.
These resources address the diagnosis or management of Hashimoto thyroiditis: - American Thyroid Association: Thyroid Function Tests - Genetic Testing Registry: Hashimoto thyroiditis - National Institute of Diabetes and Digestive and Kidney Diseases: Thyroid Function Tests These resources from MedlinePlus offer in...
What genes are related to Hutchinson-Gilford progeria syndrome? Mutations in the LMNA gene cause Hutchinson-Gilford progeria syndrome. The LMNA gene provides instructions for making a protein called lamin A. This protein plays an important role in determining the shape of the nucleus within cells. It is an essential sc...